Throstle spinning-machine



' UNITED sTATEs PATENT oEEIcE.

JOEL SMITH, OF NORTHBRIDGE, MASSACHUSETTS.

THROSTLE SPINNING-MACHINE.

Specification of Letters Patent No.

To all whom t may concern:

Be it known that I, JOEL SMITH, of Northbridge, in the county of Vorcester, in the State of Massachusetts, have invented certain new and useful Improvements in what are technically called Ring-Spinning Machinesg7 and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, in which drawings- Figure l is an elevationof one end of a spinning frame, and also of my improvements attached thereto. Fig. 2 is a plan of the same, and Fig. 3 is a side elevation. Fig. 4 is an elevation of a spindle, with section of filled bobbin, and ring and traveler. Fig. 5 is an elevation of an empty bobbin.

The nature of my invention consists in combining with the operating parts of a ring spinning machine, a simple contrivance consisting of two cone pulleys, or their equivalent, and a belt with a simple device for causing the belt to traverse upon said cones, so as to communicate from the cylinder shaft which drives the spindles to the rollers a mot-ion constantly varying in speed, and that in a ratio corresponding to the increase of the diameter of the bobbin while being filled.

It has been a common objection to the ring spinning, which otherwise is considered a superior method of spinning that as the bobbin is gradually filled the twist becomes harder-that is to say the yarn receives a greater number of twists in a given length, so that if, when the bobbin is empty, the requisite twist is given to the yarn during the winding on of the first layer; when it is nearly filled the yarn will receive too much twist, or too great a number of twists in a given length. Now the reason of this may be found in the following, for instance, the number of revolutions of the bobbin must during the time the rolls are giving 16,028, dated November 4:, 1856.

windingon a yard of yarn than when it is full; consequently there will be a less number of revolutions left to twist that yard, and the result, of course, will be a less number of twists per yard than when the bobbin is nearly full. There has been heretofore no provision made in this class of machinery, to meet this variation; but the rollers have been made to give out, with a uniformvelocity, hence my improvement which not only, by causing the rolls to give out the yarn at a uniformly increasing speed corresponding to the increase in the diameter of the bobbin, provides for a uniform twist; but also enables me proportionately to increase the quantity of yarn spun in a given time.

To enable others skilled in the art to construct my improvements, I will proceed to describe its construction and operation.

A, is the cylinder from which the spindles and bobbins are driven, the axle of which has its bearings in the frame, B. To this frame is secured the stand, C, in which is stud, D, carrying cone pulley, E. Upon the aXle of, A, is made fast another cone pulley, F; these cone pulleys are of such proportions, that a belt passing from, F, to, E, may-when made to traverse from the smaller to the larger end of, F, communicate meanwhile a constant-ly accelerated motion to, E, proportionate to the varying diameter of the bobbins as they fill. A belt passing around pulley, G, on the end of cone, E, actuates the pulleys, H, and I, which drive the rolls through the intervening gears, as shown in the drawings.

On the shaft of one of the rolls, J, is worm, K, which drives worm wheel, L, which is connected by shaft, M, with pinion, O, which in turn drives wheel, P. This wheel, P, has several pins, Q, which as it revolves tilt the lever, R, which is pivoted to the arm, S, projecting from the frame. To the opposite end of, R, is attached the pawl, T, or its equivalent which acts on ratchet wheel, U, so that every time the lever is tilted by one of the pins passing it this ratchet wheel is revolved one tooth more, or less, and with it is turned the screw, V, to which it is attached. This screw is supported in bearings in the rlower part of stand, C, and drives the nut, W, to which is attached arms to operate the belt on the. cones; and also an arm projecting down- Ward, through a slot in the horizontal part of the stand, C, to prevent the nut from turning With the screw.

The proportions of the gearing, gain of screw, Sac., are so arranged as to give the requisite amount of traverse motion to the belt. When the bobbins are full a hand crank is applied to the square end of screw, V, to turn back the nut to the starting point. To adapt the regulating movement to dil'erent sized yarns, itis only necessary to Change the fulorum of lever, R, so that paWl, T,

shall loe made to turn ratchet Wheel, U, more or less teeth at a time which may easily be done by siatting arms, S, and lever, R, or by adding to, or decreasing the number of pins in Wheel, P, or any other convenient method of varying the extent of the traverse motion of the belt upon the cones.

What I claim as my invention and desire to secure by Letters Patent ism Regulating the twist of the yarn in ring spinning machines by communicating a gradually accelerated motion (proportionate to the gradually increasing diameter of the bobbins) to the rolls which give out the yarn to the bobbins, substantially in the manner and for the purposes set forth.

JOEL SMITH. Witnessesz SAML. L. Hays, HENRY B. OsGooD. 

